... No coking, low emissions: burning fully, chimney without black smoke, pipes and grates without coking phenomenon 3. Fuel costs savings: combustion ... % lower than the ordinary atmospheric pressure boiler 4. Versatile: suitable for factories, offices, schools, hotels, bath center, family etc 5. ... , hot water, steam, bathing water Biomass Hot Water Boiler for Family/Atmospheric Pressure Hot Water Boiler